144 GLIRES. 
Dr. v. Frantzius has stated that Professor Peters has recorded the occurrence in 
Guatemala of Hesperomys albigularis, Tomes (giving a reference to the ‘ Monatsbericht,’ 
1860, p. 105*); but Dr. Peters assures me that this is a complete mistake, and that he 
never received that species from Central America. 
1. Hesperomys teguina. (Tab. XIV. fig. 1.) 
Mus teguina, Gray, P. Z. S. 1843, p. 79 (sine descr.)’. 
Hesperomys teguina, Alston, P. Z. 8. 1876, p. 755 (descr. orig.)*; op. cit. 1877, p. 446. 
Hab. Guatemata, Coban (Mus. Brit.1). 
This very peculiar-looking species was named without description by Gray in 18431, 
and first characterized by me in 18767. As yet it is only known from the mounted 
type in the British Museum, purchased along with a number of other Guatemalan 
animals from Leadbeater; and I only provisionally refer it to the subgenus Vesperomys 
until its whole organization is known. In the comparative shortness of its tail and 
in its nearly uniform rich coloration it is strikingly different from all the Nearctic 
Mice, and also from all the Neotropical forms with which I am acquainted. 
2. Hesperomys leucopus. 
Mus leucopus, Rafinesque, Am. Monthly Mag. iii. p. 446 (1818, descr. orig., fide Baird)’. 
Hesperomys texanus, Woodhouse, Proc. Ac. Philad. vi. p. 242 (1853, descr. orig.)*; Baird, Mamm. 
N. Am. p. 464°; Rep. U.S. Mex. Bound. Surv. ii. Mamm. p. 43°. 
Hesperomys sonoriensis, Le Conte, Proc. Ac. Philad. vi. p. 413 (1853, descr. orig.)°; Baird, Mamm. 
N. Am. p. 474°; Rep. U.S. Mex. Bound. Surv. ii. Mamm. p. 43”. 
Hesperomys (Vesperomys) leucopus sonoriensis, Coues, Proc. Ac. Philad. 1874, p. 179°. 
Hesperomys leucopus sonoriensis, Coues, Mon. N.-Am. Rodent. p. 79°. 
Hesperomys americanus, Coues, Amer. Nat. xiii. p. 231 (1879, ex Kerr +)”. 
Hab. Norta America, from the Arctic Regions southwards?.—MeExico (Deppe, Mus. 
Berol.), Charco Escondido (Couch, U.S. Nat. Mus.*), Sonora (Clark, ib.4), Oaxaca 
(Sallé, Mus. Brit.). | 
The variety or geographical race of the Common White-footed Mouse, which 
inhabits the interior of North America west of the Mississippi, was first described as 
a distinct species by Le Conte® from a North-Mexican specimen. The “variety” is 
* Arch. f. Naturg. xxxv. 1, p. 271. . 
+ Founded on Kerr’s Mus agrarius americanus (An. Kingd. 1792, p. 231), which is described as a variety 
of the European M. agrartus. Not being used binomially, the term has no claims on adoption; but even 
if it had been otherwise, it cannot be received, as Kerr had already described a M. americanus (tom. cit. 
p. 227) based on Pennant’s “American Rat” of the Leverian Museum (Hist. Quad. p. 441; Arct. Zool. i. 
p. 130)}—an animal which is probably undeterminable, unless it may have been founded on American examples 
of M. rattus. 
